unit2.pas

点对点的通信程序

unit Unit2;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Sockets,Unit1;

type
  TForm2 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Button1: TButton;
    Button2: TButton;
    TcpServer1: TTcpServer;
    Button3: TButton;
    procedure Label1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure Button3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;

implementation


{$R *.dfm}

procedure TForm2.Label1Click(Sender: TObject);
begin
  TcpServer1.Active := False;
  TcpServer1.LocalPort := Trim(Edit1.Text);
  TcpServer1.Active := True;

end;

procedure TForm2.Button2Click(Sender: TObject);
begin
  with TcpServer1 do
  begin
    Active := False;
    close;
    showmessage(DateTimeToStr(Now)+'　服务已经停止！');
  end;

end;
procedure TForm2.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  TcpServer1.Active := False;
  TcpServer1.Close;
end;

procedure TForm2.Button3Click(Sender: TObject);
begin
   Form1.ShowModal;
end;

end.